/***********************************************************/
/*Arcans Project                                           */
/*Jeu sous forme d'application web entièrement conçu       */
/*et réalisé par Killian Le Maitre                         */
/*la v0.2, version actuelle, est parue le 15 Novembre 2010 */ 
/*Jeu sous licence GNU GPL v3 (voir NOTICE et COPYING)     */
/***********************************************************/

//extension de la fonction toHexStr de la classe Number
Number.prototype.toHexStr = function() {
	var s="", v;
	for (var i=7; i>=0; i--) { v = (this>>>(i*4)) & 0xf; s += v.toString(16); }
	return s;
}
//fonctions nécessaire pour le hashage
function ROTR(n, x) { return (x >>> n) | (x << (32-n)); }
function Sigma0(x) { return ROTR(2,  x) ^ ROTR(13, x) ^ ROTR(22, x); }
function Sigma1(x) { return ROTR(6,  x) ^ ROTR(11, x) ^ ROTR(25, x); }
function sigma0(x) { return ROTR(7,  x) ^ ROTR(18, x) ^ (x>>>3);  }
function sigma1(x) { return ROTR(17, x) ^ ROTR(19, x) ^ (x>>>10); }
function Ch(x, y, z)  { return (x & y) ^ (~x & z); }
function Maj(x, y, z) { return (x & y) ^ (x & z) ^ (y & z); }

//classe javascript de connexion
var obj_connex = {
	//méthode :
	openCon: function () {
		window.scrollTo(0,0);
		document.body.style.overflow = "hidden";
		//ouverture de l'encart
		var voile = document.getElementById("voile");
		voile.style.display = "block";
		var encart = document.getElementById("encart");
		encart.style.display = "block";
		for (var i = 0;i < 9;i++) window.setTimeout("document.getElementById('voile').style.opacity = 0." + i, 50*i);
		obj_connex.openConC();
	},
	openConC: function () {
		var encart = document.getElementById("encart");
		encart.style.top = "-300px";
		encart.style.left = "550px";
		encart.style.width = "300px";
		for (var i = 0;i < 9;i++) {
			var temp = -400 + i*55;
			window.setTimeout("document.getElementById('encart').style.top = '" + temp + "px';", 50*i);
		}
		var main_div = document.createElement("div");
		//titre
		var crea_child1 = document.createElement("h3");
		crea_child1.appendChild(document.createTextNode("Connexion :"));
		main_div.appendChild(crea_child1);
		//zone d'alerte
		crea_child1 = document.createElement("div");
		crea_child1.setAttribute("id", "result");
		main_div.appendChild(crea_child1);
		//tableau
		crea_child1 = document.createElement("label");
		crea_child1.setAttribute("for", "pseudo");
		crea_child1.appendChild(document.createTextNode("Pseudonyme : "));
		var crea_child2 = document.createElement("input");
		crea_child2.setAttribute("maxlength", "15");
		crea_child2.setAttribute("id", "pseudo");
		var crea_child3 = document.createElement("td");
		crea_child3.appendChild(crea_child1);
		crea_child1 = document.createElement("td");
		crea_child1.appendChild(crea_child2);
		crea_child2 = document.createElement("tr");
		crea_child2.appendChild(crea_child3);
		crea_child2.appendChild(crea_child1);
		crea_child1 = document.createElement("label");
		crea_child1.setAttribute("for", "pwd");
		crea_child1.appendChild(document.createTextNode("Mot de passe : "));
		crea_child3 = document.createElement("td");
		crea_child3.appendChild(crea_child1);
		crea_child1 = document.createElement("input");
		crea_child1.setAttribute("type", "password");
		crea_child1.setAttribute("id", "pwd");
		crea_child1.setAttribute("maxlength", "15");
		var crea_child4 = document.createElement("td");
		crea_child4.appendChild(crea_child1);
		crea_child1 = document.createElement("tr");
		crea_child1.appendChild(crea_child3);
		crea_child1.appendChild(crea_child4);
		crea_child3 = document.createElement("table");
		crea_child3.appendChild(crea_child2);
		crea_child3.appendChild(crea_child1);
		main_div.appendChild(crea_child3);
		//bouton de validation
		var button = document.createElement("input");
		button.setAttribute("type", "button");
		button.setAttribute("value", "Connexion");
		button.setAttribute("class", "button");
		button.setAttribute("onclick", "javascript:obj_connex.conValid();");
		main_div.appendChild(button);
		//bouton d'annulation
		button = document.createElement("input");
		button.setAttribute("type", "button");
		button.setAttribute("value", "Annuler");
		button.setAttribute("class", "button");
		button.setAttribute("onclick", "javascript:obj_connex.conClose(0);");
		main_div.appendChild(button);
		//lien renouvellement mot de passe
		crea_child1 = document.createElement("a");
		crea_child1.setAttribute("href", "#");
		crea_child1.setAttribute("onclick", "javascript:obj_fpwd.openFpwd();");
		crea_child1.appendChild(document.createTextNode("Vous avez oublié votre mot de passe ?"));
		crea_child2 = document.createElement("p");
		crea_child2.appendChild(crea_child1);
		main_div.appendChild(crea_child2);
		encart.appendChild(main_div);
	},
	conClose: function (reload) {
		for (var i = 0; i < 9; i++) {
			window.setTimeout("document.getElementById('voile').style.opacity = 0." + (8 - i), 50*i);
			var temp = 40 - i*55;
			window.setTimeout("document.getElementById('encart').style.top = '" + temp + "px';", 50*i);
		}
		window.setTimeout("document.getElementById('encart').removeChild(document.getElementById('encart').firstChild);", 399);
		window.setTimeout("document.getElementById('voile').style.display = 'none'", 400);
		window.setTimeout("document.getElementById('encart').style.display = 'none'", 400);
		if (reload == 1) window.setTimeout("location.reload();", 410);
		document.body.style.overflow = "auto";
	},
	hashFun: function (chaine) {
		//variables :
		var K = [0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2];
		var H = [0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19];
		chaine += String.fromCharCode(0x80);
		var l = chaine.length/4 + 2;
		var N = Math.ceil(l/16);
		var M = new Array(N);
		for (var i=0; i<N; i++) {
			M[i] = new Array(16);
			for (var j=0; j<16; j++) {
				M[i][j] = (chaine.charCodeAt(i*64+j*4)<<24) | (chaine.charCodeAt(i*64+j*4+1)<<16) | (chaine.charCodeAt(i*64+j*4+2)<<8) | (chaine.charCodeAt(i*64+j*4+3));
			}
		}
		M[N-1][14] = ((chaine.length-1)*8) / Math.pow(2, 32); M[N-1][14] = Math.floor(M[N-1][14])
		M[N-1][15] = ((chaine.length-1)*8) & 0xffffffff;
		var W = new Array(64);
		var a, b, c, d, e, f, g, h;
		for (var i=0; i<N; i++) {
			for (var t=0;  t<16; t++) { W[t] = M[i][t]; }
			for (var t=16; t<64; t++) { W[t] = (sigma1(W[t-2]) + W[t-7] + sigma0(W[t-15]) + W[t-16]) & 0xffffffff; }
			a = H[0]; b = H[1]; c = H[2]; d = H[3]; e = H[4]; f = H[5]; g = H[6]; h = H[7];
			for (var t=0; t<64; t++) {
				var T1 = h + Sigma1(e) + Ch(e, f, g) + K[t] + W[t];
				var T2 = Sigma0(a) + Maj(a, b, c);
				h = g;
				g = f;
				f = e;
				e = (d + T1) & 0xffffffff;
				d = c;
				c = b;
				b = a;
				a = (T1 + T2) & 0xffffffff;
			}
			H[0] = (H[0]+a) & 0xffffffff;
			H[1] = (H[1]+b) & 0xffffffff; 
			H[2] = (H[2]+c) & 0xffffffff; 
			H[3] = (H[3]+d) & 0xffffffff; 
			H[4] = (H[4]+e) & 0xffffffff;
			H[5] = (H[5]+f) & 0xffffffff;
			H[6] = (H[6]+g) & 0xffffffff; 
			H[7] = (H[7]+h) & 0xffffffff; 
		}
		return H[0].toHexStr() + H[1].toHexStr() + H[2].toHexStr() + H[3].toHexStr() + H[4].toHexStr() + H[5].toHexStr() + H[6].toHexStr() + H[7].toHexStr();
	},
	conValid: function () {
		var result = document.getElementById("result");
		if (result.hasChildNodes()) result.removeChild(result.firstChild);
		var regval = new RegExp(/^[\w]+[\w\-\.]{2,}$/);
		var pseudo = document.getElementById("pseudo").value;
		var pwd = document.getElementById("pwd").value;
		if (regval.test(pseudo)) {
			if (regval.test(pwd)) {
				//hashage du pseudo et du mot de passe
				var hash_pwd = this.hashFun(pwd);
				//requête ajax pour la validation de la connexion
				try { var xhr = new ActiveXObject('Msxml2.XMLHTTP'); }
				catch (e) {
					try { var xhr = new ActiveXObject('Microsoft.XMLHTTP'); }
					catch (e2) {
						try { var xhr = new XMLHttpRequest(); }
						catch (e3) { xhr = false; }
					}
				}
				//xhr fonction
				xhr.onreadystatechange = function() {
					if(xhr.readyState  == 4) {
						if(xhr.status  == 200) {
							var reponse = xhr.responseText;
							switch (reponse) {
								case "0" :
									var crea_child = document.createElement("span");
									crea_child.setAttribute("class", "erreur");
									crea_child.appendChild(document.createTextNode("Le mot de passe ne correspond pas."));
									crea_child.appendChild(document.createElement("br"));
									crea_child.appendChild(document.createTextNode("Si vous avez perdu votre mot de passe, cliquez sur le lien en bas de l'encart."));
									result.appendChild(crea_child);
									break;
								case "1" :
									obj_connex.conSuccess();
									break;
								case "2" :
									var crea_child = document.createElement("span");
									crea_child.setAttribute("class", "erreur");
									crea_child.appendChild(document.createTextNode("Vous n'êtes pas inscrit."));
									crea_child.appendChild(document.createElement("br"));
									var crea_a = document.createElement("a");
									crea_a.setAttribute("href", "javascript:obj_connex.insOpen();");
									crea_a.appendChild(document.createTextNode("Pour vous inscrire, cliquez sur ce lien."));
									crea_child.appendChild(crea_a);
									result.appendChild(crea_child);
									break;
							}
						}
					}
				}
				//lancement de l'ajax
				xhr.open( "POST", "?p=acon",  true);
				xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
				var donnees = 'info1=' + pseudo + '&info2=' + hash_pwd;
				xhr.send(donnees);
			}
			else {
				var crea_child = document.createElement("p");
				crea_child.setAttribute("class", "erreur");
				crea_child.appendChild(document.createTextNode("Le mot de passe n'est pas valide ! (erreur dans l'écriture du mot de passe)"));
				result.appendChild(crea_child);
			}
		}
		else {
			var crea_child = document.createElement("p");
			crea_child.setAttribute("class", "erreur");
			crea_child.appendChild(document.createTextNode("Le pseudonyme n'est pas valide ! (erreur dans l'écriture du pseudonyme)"));
			result.appendChild(crea_child);
		}
	},
	conSuccess: function () {
		var encart = document.getElementById('encart');
		encart.removeChild(encart.firstChild);
		var main_div = document.createElement("div");
		//titre
		var crea_child = document.createElement("h3");
		crea_child.appendChild(document.createTextNode("Connexion : "));
		main_div.appendChild(crea_child);
		//texte
		crea_child = document.createElement("p");
		crea_child.setAttribute("class", "valid");
		crea_child.appendChild(document.createTextNode("Vous êtes maintenant connecté. La page va se recharger automatiquement."));
		main_div.appendChild(crea_child);
		encart.appendChild(main_div);
		//fermeture
		window.setTimeout("obj_connex.conClose(1);", 800);
	},
	insOpen: function () {
		//fermeture de l'encart
		for (i = 0; i < 9; i++) {
			var temp = 40 - i*50;
			window.setTimeout("document.getElementById('encart').style.top = '" + temp + "px';", 50*i);
		}
		//ouverture de l'encart
		window.setTimeout("document.getElementById('encart').removeChild(document.getElementById('encart').firstChild);", 495);
		window.setTimeout("obj_inscrip.openInsC();", 500);
	}
}